Abrasion amount estimation device and abrasion amount estimation method for check valve of injection molding machine

Abstract

An abrasion amount estimation device stores a learning result obtained through supervised learning performed based on a feature amount, which is extracted from a physical amount which is acquired in injection performed by an injection molding machine, and information related to an abrasion amount of a check valve which has been attached to the injection molding machine in the injection. The abrasion amount estimation device estimates an abrasion amount of a check valve which has been attached to the injection molding machine in the injection based on the learning result which is stored and the feature amount which is extracted.

The invention claimed is: 
     
       1. An abrasion amount estimation device which estimates an abrasion amount of a check valve attached to an injection molding machine, the abrasion amount estimation device comprising:
 a learning result storage unit which is configured to store a learning result obtained through supervised learning performed based on a feature amount, the feature amount being extracted from a physical amount in a check valve in which a predetermined abrasion amount is prepared in advance and which is acquired in injection performed by the injection molding machine, and information related to an abrasion amount of a check valve which has been attached to the injection molding machine in the injection; 
 a physical amount acquisition unit which acquires a physical amount in injection of the injection molding machine; 
 a feature amount extraction unit which extracts a feature amount of a physical amount based on the physical amount acquired by the physical amount acquisition unit; 
 an abrasion amount estimation unit which estimates an abrasion amount of a check valve which has been attached to the injection molding machine in the injection, based on the learning result stored in the learning result storage unit and the feature amount extracted by the feature amount extraction unit; and 
 an estimation result output unit which outputs an abrasion amount estimated by the abrasion amount estimation unit. 
 
     
     
       2. The abrasion amount estimation device according to  claim 1 , further comprising:
 a supervised learning unit which performs supervised learning based on a feature amount, the feature amount being extracted from a physical amount which is acquired in injection performed by the injection molding machine, and information related to an abrasion amount of a check valve which has been attached to the injection molding machine in the injection and stores a result of the learning in the learning result storage unit. 
 
     
     
       3. The abrasion amount estimation device according to  claim 1 , wherein a feature amount of the physical amount is a numerical value representing a feature of the physical amount. 
     
     
       4. The abrasion amount estimation device according to  claim 1 , wherein a feature amount of the physical amount is a feature amount obtained by approximating a variation pattern of the physical amount. 
     
     
       5. An abrasion amount estimation method for check valve attached to an injection molding machine, the abrasion amount estimation method comprising:
 performing an injection operation in a state in which a plurality of check valves having abrasion amounts different from each other are attached respectively; 
 acquiring a physical amount related to an injection operation during the injection operation performed by the injection molding machine; 
 extracting a feature amount of the physical amount which is acquired; 
 performing supervised learning in which an abrasion amount of the check valve is used as correct answer information and the feature amount which is extracted is used as an input; and 
 estimating an abrasion amount of a check valve based on a learning result of the supervised learning when an arbitrary feature amount of the physical amount is inputted. 
 
     
     
       6. The abrasion amount estimation method for check valve according to  claim 5 , wherein a feature amount of the physical amount is a numerical value representing a feature of the physical amount. 
     
     
       7. The abrasion amount estimation method for check valve according to  claim 5 , wherein a feature of the physical amount is a feature amount obtained by approximating a variation pattern of the physical amount.